1. G. R. Satchler:Direct Nuclear Reaction (Oxford University Press, Oxford, 1983).
2. P. Hodgeson:Nuclear Heavy Ion Reactions (Oxford University Press, Oxford, 1978).
3. C. S. Shastry andY. K. Gambhir:Pramana,23, 175 (1984);Phys. Rev. C,28, 1109 (1983).
4. V. De Alfaro andT. Regge:Potential Scattering (North Holland Publ. Co., 1965)
5. P. P. Tung et al.:Phys. Rev. C,18, 1663 (1978).